Effectiveness of the Slide and Cross-Over Steps In Volleyball Blocking—A Temporal Analysis     

Richard H. Cox  Larry Noble  Robert E. Johnson 《Research quarterly for exercise and sport》2013,84(2):101-107

Abstract

Three initial step techniques for moving laterally are commonly used by middle blockers in volleyball. These three methods are (1) the slide step, (2) the cross-over step, and (3) the jab cross-over step. The purpose of the current investigation was to study the relationship between the three initial step techniques and selected time variables involved in the jumping and blocking action. Four criterion measures were extracted from film footage (100 frames/sec) using cinematographic data collection techniques. Six skilled volleyball players were used as subjects (3 men and 3 women). A split-split plot 3 (step method) × 2 (response direction) × 2 (sex) factorial design, with repeated measures on method and direction, were used to analyze the criterion measures. Results of the analysis revealed a clear relationship between step method and three of the time variables studied. Specifically, the cross-over steps (and in particular the jab cross-over) were observed to be superior to the slide step in terms of getting the athlete's body off the ground and into a blocking position quickly. While earlier investigations demonstrated that the slide step was superior in terms of getting from a middle blocking position to a floor switch mat (stationary target) it seems clear from the present investigation that the jab cross-over is superior in terms of actual jumping and blocking efficiency.  相似文献   

Research on Webbed Connectivity in a Web-Based Learning Environment: Online Social Work Education     

Dorinda Noble  Amy Catherine Russell 《Journal of Teaching in Social Work》2013,33(4-5):496-513

This paper describes the preliminary data and analysis of how students in an online MSW program perceive their experiences, interactions, and responses to learning structure, material, and technology in the Web environment. The student perceptions, which have been used to refine the online program, highlight how important it is to students to feel a personal or webbed connection to faculty and other students in the Web environment. Rather than being a cold, sterile learning environment, the online learning world appears to be one that encourages professional webbed connectivity and relationship building.  相似文献   

Counteracting Age Stereotypes: A Self-Awareness Manipulation     

Yiwei Chen  Olivia Pethtel  Xiaodong Ma 《Educational gerontology》2013,39(8):702-717

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Cultural capital as an explanation of variation in participation in higher education   总被引：1，自引：1，他引：0  

John Noble 《British Journal of Sociology of Education》2009,30(5):591-605

Cultural capital is frequently referred to as a construct in the analysis of inequality in higher education. It has been suggested that variations in cultural capital contribute to social class differences in levels of participation, distribution of students between elite and other universities, and the likelihood of dropping out. However, recent analyses of quantitative data suggest that once students’ attainments are included in analysis of levels of participation the effects of social class disappear. One possibility is that cultural capital affects the likelihood of participation in higher education independently of the common measures of social class variation (parental occupation and education). In this analysis we include a measure of students’ cultural capital to investigate whether it exerts an effect on the likelihood of participation that is independent from students’ attainment. We also present and evaluate a practicable method of measuring students’ cultural capital.  相似文献   

Factor structure,reliability and validity of the Parental Support for Learning Scale: Adolescent Short Form (PSLS-AS)     

Maria A. Rogers  Andrea Jane Hickey  Judith Wiener  Nancy Heath  Rick Noble 《Learning Environments Research》2018,21(3):423-431

Parental involvement in children’s learning has been found to influence academic success. However, very few tools exist for measuring parental involvement, particularly ones that target adolescents’ self-report. The present study assessed the factor structure, reliability and convergent validity of a new scale to assess adolescents’ perceptions of their mothers’ and fathers’ educational involvement: the Parental Support for Learning Scale: Adolescent Short Form (PSLS-AS). The PSLS-AS, as well as a questionnaire measuring the risk of high school drop-out, was administered to a sample of 825 youth (aged 13–14 years). Exploratory factor analysis revealed a two-factor structure representing parental involvement: Controlling Involvement and Autonomy Supportive Involvement. Adolescents’ perceptions of their parents’ involvement correlated with a risk of high school drop-out. Implications and future directions for further validation of the PSLS-AS are discussed.  相似文献   

Toward a theoretical framework for community EE     

Olivia Aguilar 《The Journal of environmental education》2018,49(3):207-227

Given the growing attention to community environmental education (CEE), this study develops a theoretical heuristic for this approach through a retroductive process by (1) examining theories appropriate for a CEE conceptual framework; (2) testing this framework in diverse contexts to determine its viability, and (3) reconceptualizing the framework. The framework hypothesizes that a community of practice focused on improving the conditions of local natural resources will exemplify transformative learning and empowerment if the community of practice is successful. Initial testing involved case studies of two groups from diverse contexts. Results indicated both groups organized as communities of practice. However, evidence showing improved local natural resources, transformative learning, and empowerment was lacking. Instead, there was evidence of enhanced agency and self-efficacy, requiring a reconceptualized framework.  相似文献   

A Factor Analysis of Preschool Children's Play Strategies and Cognitive Style     

Olivia N. Saracho 《教育心理学》1999,19(2):165-180

ABSTRACT The social behaviours of 2400 3‐, 4and 5‐year old children attending an early childhood programme were observed, recorded, and analysed, and their cognitive style assessed. Factors underlying the play of preschool children based on their cognitive style were identified. Sex and age were considered in these social factors. ThePlay Rating Scale was used to record young children's behaviours in four different forms of play (physical, block, manipulative, dramatic); while theGoodenough‐Harris Drawing Test was used to determine the children's cognitive style. Factor analysis indicated two dimensions of play behaviours for each group of children. These factors had strong loadings with a range of items. The factors indicated that field‐dependent children participated more in social play activities, whereas field‐independent children engaged more in nonsocial play activities. The study suggests practical and research implications in promoting educational play using the children's cognitive style.  相似文献   

Principal components analysis to characterise fatigue-related changes in technique: Application to double under jump rope     

Olivia Bruce  Kimberly Moull 《Journal of sports sciences》2017,35(13):1300-1309

The upper extremities play an important role in managing the rope-turning technique required to perform continuous double unders. However, acute adaptions in this technique may occur as a jumper fatigues. The purpose of this study was to examine how turning technique is adapted with fatigue. Three-dimensional kinematic data of the upper extremity were collected from 10 trained athletes as they performed consecutive double unders to volitional fatigue. Time series wrist, elbow and shoulder joint angles were calculated where joint angle waveforms representing 10 unique trials from the beginning (“fresh”) and end (“fatigued”) of the continuous jumping protocol for all participants were analysed using principal component analysis. Participants reported stopping due to cardiovascular and shoulder muscular fatigue. From a kinematics perspective, with fatigue athletes used a more internally rotated range of motion at the shoulder, which we believe prompted a series of more distal adaptions in order to maintain rope turning, preserving consecutive double under performance. The presence of a maladaptive adaptation at the shoulder may increase the risk of developing shoulder injuries. Coaches should consider helping jumpers develop appropriate shoulder muscle endurance such that they can continue to maximise their training and proficiency, while protecting against potential fatigue-related maladaptation.  相似文献   

Priorities for publishing research     

J. Kendrick Noble 《Publishing Research Quarterly》1994,10(3):60-67

The author suggests a wide-ranging research agenda, including applying and safeguarding copyright, increasing literacy, comparing the appropriate uses of the printed word and other media, understanding language itself, assisting authors to get their work into print, improving statistics about the industry, predicting the future of suppliers as well as publishers themselves, improving distribution, and influencing the likely future of the information superhighway. J. Kendrick Noble was formerly publishing industry analyst for Paine Webber, Inc.  相似文献   

Demographics and destiny     

J. Kendrick Noble 《Publishing Research Quarterly》1988,4(4):32-37

Although publishers are accustomed to defining audiences and markets, they rarely take into account demographic data. Knowing the size of various age groups can help publishers to distinguish between subject areas whose markets are likely to grow and those whose markets are likely to shrink or level off Kendrick Noble offers demographic profiles of the U.S. population in 1988 and 1995 and predicts some likely effects of demographic change on the markets for pubishers’ products. J. Kendrick Noble, Jr., is first vice president of Paine Webber, Inc. and a leading analyst of the publishing industry.  相似文献